Demonstration ofultra-high-resolutionMFMimagesusingCo90Fe10-coated CNT probes
SCIE
SCOPUS
- Title
- Demonstration ofultra-high-resolutionMFMimagesusingCo90Fe10-coated CNT probes
- Authors
- Sang-Jun Choi; Ki-Hong Kim; Young-Jin Cho; Hu-san Lee; Soo-haeng Cho; Kwon, SJ; Jung-hwan Moon; Kyung-Jin Lee
- Date Issued
- 2010-02
- Publisher
- Elsvier
- Abstract
- We demonstrate ultra-high-resolution magnetic force microscopy images of perpendicular magnetic storage media using carbon nanotube probes coated by ferromagnetic Co90Fe10 films (20, 30, 40, and 50 nm). By optimizing ferromagnetic film thickness (effective tip diameter), we obtained best magnetic domain image with an 40 nm-Co90Fe10-coated tip (50nm tip diameter) about a lateral detect density of 1200 k flux per inch on perpendicular magnetic storage medium, one of the highest resolutions in MFM imaging reported for this material system and structure. The observed dependence of tip dimension on signal contrast and image resolution was successfully explained by a theoretical analysis indicating that the signal contrast, along with the physical probe-tipdimension, should be taken into account to design magnetic probes tips for high-resolution magnetic force microscopy. (C) 2009 Elsevier B.V. All rights reserved.
- Keywords
- CNT probe; MFM; Magnetization value; Co90Fe10; FCI; MAGNETIC FORCE MICROSCOPY; RECORDING MEDIA
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/26482
- DOI
- 10.1016/J.JMMM.2009.09.052
- ISSN
- 0304-8853
- Article Type
- Article
- Citation
- JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, vol. 322, no. 3, page. 332 - 336, 2010-02
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